#include "direct3d11.interop.h"

namespace flutter_inappwebview_plugin
{

  namespace {

    typedef HRESULT(WINAPI* CreateDirect3D11DeviceFromDXGIDeviceFn)(IDXGIDevice*,
      LPVOID*);

    struct D3DFuncs {
      CreateDirect3D11DeviceFromDXGIDeviceFn CreateDirect3D11DeviceFromDXGIDevice =
        nullptr;

      D3DFuncs()
      {
        auto handle = GetModuleHandle(L"d3d11.dll");
        if (!handle) {
          return;
        }

        CreateDirect3D11DeviceFromDXGIDevice =
          reinterpret_cast<CreateDirect3D11DeviceFromDXGIDeviceFn>(
            GetProcAddress(handle, "CreateDirect3D11DeviceFromDXGIDevice"));
      }

      static const D3DFuncs& instance()
      {
        static D3DFuncs funcs;
        return funcs;
      }
    };

  }  // namespace

  HRESULT CreateDirect3D11DeviceFromDXGIDevice(IDXGIDevice* dxgiDevice,
    IInspectable** graphicsDevice)
  {
    auto ptr = D3DFuncs::instance().CreateDirect3D11DeviceFromDXGIDevice;
    if (ptr) {
      return ptr(dxgiDevice, reinterpret_cast<LPVOID*>(graphicsDevice));
    }

    return E_NOTIMPL;
  }

}  // namespace util
